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(See Syllabus “Due Dates for Assignments & Exams” for due dates.)

i L A B O V E R V I E W
Scenario and Summary
This week, you will be implementing inheritance by creating a generic Racer superclass along with two subclasses called StreetTuner and HotRod. You will make the Racer class abstract and include the abstract method IsDead in the Racer class.
Deliverables
Due this week:
• Capture the console output window and paste it into a Word document.
• Zip the project folder.
• Put the zip file and screenshots (Word document) in the Dropbox.
i L A B S T E P S
STEP 1: Understand the UML Diagram

Engine: -cylinders: int -horsepower:int +Engine() +Engine(in cylinders: int , in horsePower :int) +toString(): string (1 to 1 to Racer) Racer: -name: string -speed: int -eng: Engine +Racer() +Racer(in name: string, in speed:int, in engine: Engine) +isDead():bool +toString():string HotRod (point to Racer): -blower:bool +HotRod() +HotRod(in name: string, in speed: int, in engine: Engine, in blower: bool) +isDead():bool +toString():string StreetTuner (point to Racer): -nitrous: bool +StreetTuner() +StreetTuner(in name: string, in speed:int, in engine: Engine, in nitrous:bool) +isDead():bool +toString(): string
STEP 2: Build the Inheritance Hierarchy

Create a project called “CIS247B_WK7_Lab_LASTNAME”
Build the class structure shown in the UML diagram. Remember to include getters and setters for each class attribute.
STEP 3: Implement Logic for HotRod Class

1. Provide suitable logic for the toString method. As always, the toString method should reveal the state of an object.
2. For the isDead method in HotRod, use the logic below to implement the inherited base class abstract method called isDead.
Hint: To generate a random number, use the following code, which returns a random number from 0 to 1:
Random rnd = new Random();
rnd.NextDouble();

Pseudocode for the isDead method of HotRod Random rnd = new Random(); boolean dead if (speed > 50 && rnd.NextDouble() > 0.6) if (engineHorsePower < 300 && blower=true) dead = false else dead = true end if else if (speed > 100 && rnd.NextDouble() > 0.4) if (engineHorsePower >= 300 && blower = true) dead = true else dead = false end if else dead = false end if
STEP 4: Implement Logic for StreetTuner Class

1. Provide suitable logic for the toString method. As always, the toString method should reveal the state of an object.
2. For the isDead() method in StreetTuner, use the logic below to implement the inherited base class abstract method called isDead.

Pseudocode for the isDead method of StreetTuner Random rnd = new Random(); boolean dead if (speed > 50 && rnd.NextDouble() > 0.6) if (engineHorsePower < 300 && nitrous=true) dead = false else dead = true end if else if (speed > 100 && rnd.NextDouble() > 0.4) if (engineHorsePower >= 300 && nitrous = true) dead = true else dead = false end if else dead = false end if
STEP 5: Construct the Main Program

Hint: When completing the Main Class for your lab, feel free to reuse old methods from previous labs!
1. Create an array of Racer objects that will hold three Racer objects.
2. Write a method, called collectRacerInformation that accepts as an argument a Racer object, and then prompts the user to provide the following information for each racer.
o Racer name
o Racer Speed
o Number of cylinders in the racer’s engine
o Horsepower of the racer’s engine
3. Add logic to collectRacerInformation to determine if the Racer object passed in is a HotRod or a StreetTuner. If it is a HotRod, prompt the user to indicate the existence of a blower. If the object is a StreetTuner, prompt the user to indicate the existence of nitrous. Set these values appropriately.
4. Write a method called displayRacerInformation that accepts as an argument a Racer object, and then displays all the information for the specific racer type.
5. Create any combination of Racer objects (make sure you create at least one StreetTuner and one HotRod) and invoke collectRacerInformation, passing in each of the Racer objects. Store each object in the array. For StreetTuner objects, be sure to set the nitrous flag (either true or false), and for the HotRod objects set the blower flag (either true or false).
6. Iterate through the racer array and, for each Racer object, display all the object’s attribute information (call the displayRacerInformation method for each object). Don’t forget to indicate whether or not the Racer is dead!
STEP 6: Compile and Test

When done, compile and execute your code, and debug any errors until your code is error-free.
Check your output to ensure that you have the desired output, modify your code as necessary, and rebuild.
Your code may resemble the following:

************Racer Information************* Name: HotRod Racer Speed: 85 **Engine Information** Cylinders: 8 Horse Power: 100 Blower: true Is the Racer dead? No **************Racer Information**************** Name: StreetTuner Racer #1 Speed: 95 **Engine Information** Cylinders: 10 Horse Power: 135 Nitrous: false Is the Racer dead? Yes *****************Racer Information*************** name: StreetTuner Racer #2 Speed: 103 **Engine Information** Cylinders; 12 Horse Power: 150 Nitrous: true Is the Racer dead? No
STEP 7: Submit Deliverables

Submit your lab to the Dropbox located on the silver tab at the top of this page. For instructions on how to use the Dropbox, read these Step-by-Step Instructions or watch this Dropbox Tutorial.
See Syllabus “Due Dates for Assignments & Exams” for due date information.